E0026

The caller lacks the management scope required for this operation.

The error message names the required scope. An API key grants only its listed scopes; a resource's write scope also permits its read operations. Calling through a browser app does not grant management access.

Have the account owner grant the required scope on the key’s page under Settings → API keys, or create a suitably scoped key bound to the account being managed. Keep secret provisioning and other session-only operations in an owner session.